Double envelope



Augx' l, 1931. c. F. BACKMYER DOUBLE ENVELOPE Filed Jan. 11, 1928 3 0mlClass Matter Hem Mafwygey i Patented Aug. 4, 1931 VVUNIHTEDISTATESPATENT OFFICE CI-IRISi'I.OPHER BACKMYER, OF GHIOAGO,- ILLINOIS, ASSIGNORTO MAGILL-WEIN- SHE'IMER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS DOUBLE ENVELOPE .Application filed January 11, 1928. Serial N0.245,824.

'This invention relates to an envelop and tion A and the edges A arepreferably specifically to a double envelop Wind]. is proglued. Thenormal l ne of gluing 1s individed with at least two pockets in one ofwhich cated by the dotted lines as shown in Figfairly large and bulkymatter may be put.

5 The other pocket is designed to receive smaller matter. Such envelopesare frequently used to carry postal matter of different classes, forexample, first class matter going in the small pocket and fourth classmatter going into the larger. It will be understood that such an envelopdoes not of necessity have to be used in this fashion.

One object of the invention is to provide in an envelop means whereby asingle flap will close two independent or separate pockets. Anotherobject of the invention is to provide an. envelop in which a singlemember serves toforin a part of one pocket and to form the sealingmember ofthe other pocket. Other objects will appear from time to timein the course of'the specification and claims.

My invention is illustrated more or less dia- I grammatically in theaccompanying drawings, wherein: p

Figure 1 is a plan view of the envelop blank before it has been folded;

Figure 2 shows the blank when two of the flaps have been folded toprovide the upper part of the large pocket and to provide the smallerpocket;

Figure 3 is a plan view showing the envelop complete, the lower flaphaving been folded and sealed to form the bottom of the large pocket andto closethe smaller pocket;

Figure 4 is a section on an enlarged'scale taken on line 4 4 of Figure3; and

Figure 5 is a longitudinal section taken on line 55 of Figure 3. I

Figures 4 and 5 are thus taken on lines at a right angle to each other.

Like parts are indicated by like characters throughout the drawings andspecification.

A is a blank. It is provided with a portion A which is preferablyintegral with it. A is a'flap which is also preferably integral with themain blank. A is a shorter or smaller portion formed preferably on themain'blank A. A A area series of extended edges or strips formed aboutthe flap A and preferably integral with it. The porto the lower edge ofthe flap ure 1.

B is a second flap placed generally opposite the flap A of approximatelythe same size, but preferably slightly narrower. It may be made integralwith the main part A or may be made separately. It is provided with anopening or window B and it may be provided with a glue portion B andanother glue portion B".

In assembling or folding the envelop normally, the flap A is inwardlybent along the dotted line X In this position it extends practicallyacross the part A. The flap B is then inwardly bent along the line Xa11d in that position it overlies the flap A This is the conditionillustrated in Figure 2. The glued parts B and B may be moistened sothat the flap B is held in place- The function of the glued portion B isto hold the flap in place at its outer end and the function of the gluedportion B is to limit the size of the smaller pocket so as to serve as apositioning and retaining part for use in holding inclosures inproperlyspaced relation to'the window B The portion A is next folded over asshown particularly in Figures 3 and l. overlaps the lower edge of theflap A and the lower edge of the flap B and it is thus glued to thelower edge of each of these members. It thus serves to complete thelarger pocket which is A, and the inwardly turned portions A and theflap A the portion A being fastened at its upper edge A to the loweredgeof the flap A The upper or smaller pocket is at the same timecompleted by the gluing or fastoning of the upper edge A of the portionA B. To strengtln en the entire envelop and close the edges of thelarger pocket, the edges A? are bent around the back of the member A andglued there-as shown particularly in Figure 5.

There is thus produced an envelop having a large pocket and a smallpocket imposed along one side of it and along its upper edge. The singleportion A is used to close both formed therefore of the blank i B mightbe separately formed and pockets and when so used the position of thearts is as shown in Figure 3 and as shown in full lines in Figure 4:. I

.While I have shown a useful and practical device, it will be obviousthat many changes might be made in the size, shape, number anddistribution of parts without departing from the spirit of my invention,and I wish 'my showing, herefore, to be taken, as ina large v sense,diagrammatic.

The entire envelop need For example, either or both not be integral. theflaps A and glued or otherwise attached to the main-body. I

I'claim: V v t I 1. An envelopformed from a blank,'there being a flapformed on saidblank projecting tioned and shaped laterally therefrom andshaped to'be folded thereacross, a second flap, shaped to be'foldedacross said blank, a portion ofsaidblank shaped'to be'folded upon itselfand to contact and'overlap the edges of said flaps, said last mentionedportion provided with extended edges positioned to be folded about saidblank, a' second portion of said blank posito be folded upon and acrossthe upper edges of said flaps to close them, said first mentioned flapforming with the blank andthe firstmentioned foldedportion of the blank,a pocket, and said two flaps forming together a pocket of substantiallylessdepth than said firstmentioned pocket.

2. In combination in an envelop, means for forming two pockets, onebeing of materially greater depth than the other, said, means includinga blankprovided with two fiaps,one flap being folded across the blank 7toward the other, the second flap being folded across the blank onthe-first flap, the-two flaps defining a pocket between them, the blankhaving aportion folded upon itself 1 and engaging the bottom edges ofthe flaps blank a pocket of materially of them andfwith and formingwithone of terially greater depth than the first menfor forming two pockets,

tionedpocket. p Y Z 1 4. IIl-COIIlblIlfitlOIl in an envelop, means onebeing of mate- 7 rially greater depth than the other, said meansincluding a'blank provided with two flaps oppositely placed upon-it, oneflap being folded across the blank'toward the other, the

second flap being folded across the blank on the first flap, the twoflaps defining a pocket between them, the blank having a portion foldedupon itself and-engaging the bottom edges of the flaps them and with theblank apocket of materially greater depth than the first mentionedpocket, the blank having a second portion positioned to be folded acrosstheupper edges of the two flaps and across the topsof the two pocketsand adapted to close them.

Signed at Chicago, county of Cook and State of-Illinois, this 6th day ofJanuary,

CHRISTOPHER BACKMYER.

one being of mate-' said I with two and forming with one and formingwith one of

